Journal of Applied Polymer Science最新文献

{"title":"Fabrication and Characterization of Electrospun Antibacterial Nanofibers From Hydroxypropyltrimethyl Ammonium Chloride Chitosan/Polyvinylpyrrolidone/Polyvinyl Alcohol","authors":"Ying Wang,&nbsp;Xuyang Feng,&nbsp;Botian Zhu,&nbsp;Hualin Zhang,&nbsp;Mengmeng Zhao,&nbsp;Yeheng Cao,&nbsp;Haoyou Jiang,&nbsp;Junru Wang","doi":"10.1002/app.70596","DOIUrl":"10.1002/app.70596","url":null,"abstract":"<div>\u0000 \u0000 <p>Microbial contamination and oxidative spoilage are major causes of food waste and safety issues. This study develops a novel strategy by fabricating electrospun ternary composite nanofiber membranes from hydroxypropyltrimethyl ammonium chloride chitosan (HACC), polyvinylpyrrolidone (PVP), and polyvinyl alcohol (PVA). The key innovation lies in the effective integration of antibacterial and antioxidant functionalities into a single, mechanically robust matrix through HACC incorporation, as confirmed by TEM analysis which revealed a homogeneous fiber structure without phase separation. Increasing the HACC content (0–2.5 wt%) refined the fiber morphology, reduced the average diameter, and optimized the tensile strength to 119.22 MPa at 2.0 wt% HACC. The membranes exhibited excellent antibacterial activity, achieving 100% inhibition against \u0000 <i>S. aureus</i>\u0000 and \u0000 <i>E. coli</i>\u0000 , primarily by disrupting bacterial cell membranes, and showed DPPH radical scavenging activity of 53.27%. This work not only presents a high-performance food packaging material with balanced mechanical, antibacterial, and antioxidant properties but also provides new insights into the design of multifunctional electrospun composites for sustainable food preservation.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 18","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147668676","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Scalable Solution Blow-Spun, Glutaraldehyde-Crosslinked PVA Nanofibers for Methylene Blue Adsorption","authors":"Hongquan Wen,&nbsp;Jiao Chen,&nbsp;Yuwen Xiang,&nbsp;Yang Yang,&nbsp;Jie Luo,&nbsp;Huawen Hu","doi":"10.1002/app.70593","DOIUrl":"10.1002/app.70593","url":null,"abstract":"<div>\u0000 \u0000 <p>In this work, a simple and scalable strategy is developed to fabricate robust poly(vinyl alcohol) (PVA) nanofiber mats via solution blow spinning (SBS), followed by chemical crosslinking using glutaraldehyde (GA). Blending high- and low-molecular-weight PVA at a mass ratio of 7:3 (total polymer concentration of 20 wt%) effectively tailors solution rheology and spinnability, enabling the formation of uniform nanofibers under high-throughput SBS conditions. Subsequent thermal treatment promotes acetal linkage formation between PVA chains, resulting in markedly enhanced thermal and structural stability, as confirmed by Fourier-transform infrared spectroscopy and thermogravimetric analysis. Batch adsorption experiments using methylene blue (MB) as a model dye reveal limited adsorption capacity under the investigated conditions, with the adsorption process not reaching equilibrium within the tested time window. Kinetic analysis indicates that the uptake behavior is governed primarily by surface site availability and weak physical interactions, consistent with hydrogen-bond-mediated binding between MB molecules and the PVA nanofiber surface. These results highlight that while GA-crosslinked PVA nanofibers provide a structurally stable and scalable platform, further surface functionalization will be required to strengthen interfacial interactions and enhance adsorption performance in future studies.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 18","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147668776","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synergistic Effects of Phosphorus, Acrylic, and Garnet on the Performance of Polyurethane Coatings","authors":"Poovizhi Umasankar,&nbsp;J. Jayashree,&nbsp;Krishnan Lakshmanan,&nbsp;G. Elango","doi":"10.1002/app.70589","DOIUrl":"10.1002/app.70589","url":null,"abstract":"<div>\u0000 \u0000 <p>The performance of polyurethane (PU) coatings in corrosive environments is often limited by electrolyte permeation and interfacial degradation, despite extensive modification strategies reported in the literature. In this study, a hybrid PU coating system incorporating 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO), an acrylic component, and garnet filler is systematically investigated. Phosphorus-based urethane and cyclohexanone-derived PU, along with acrylic- and garnet-modified variants, were synthesized and characterized using Fourier transform infrared spectroscopy (FT-IR), nuclear magnetic resonance (NMR), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), and thermal, mechanical, optical, and wettability analyses. Thermal behaviour was evaluated using differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). Corrosion protection performance was assessed by electrochemical impedance spectroscopy, and the impedance data were quantitatively analyzed using equivalent circuit modeling to extract coating resistance, capacitance, and charge-transfer parameters. The hybrid coatings exhibited enhanced thermal stability, higher char yield, improved hydrophobicity, and superior barrier performance compared with unmodified PU. Garnet incorporation increased charge-transfer resistance and reduced ion diffusion, while DOPO and acrylic modification influenced curing behaviour and charge transport characteristics. These results provide quantitative structure–property–electrochemical correlations and support the application of hybrid PU coatings as multifunctional protective materials.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 18","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147668591","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Study on Phytic Acid-Doped Polyaniline Absorbing Zinc Ions as a High-Efficiency Organic–Inorganic Hybrid Anticorrosion Pigment to Enhance the Corrosion Resistance of Waterborne Epoxy Coatings","authors":"Chunyu Li,&nbsp;Yongsheng Hao,&nbsp;Mingze Hu,&nbsp;Yongwei Shen,&nbsp;Sijia Liu,&nbsp;Hongwei Chang,&nbsp;Pengcheng Li,&nbsp;Qi Yun","doi":"10.1002/app.70597","DOIUrl":"10.1002/app.70597","url":null,"abstract":"<div>\u0000 \u0000 <p>A highly efficient organic–inorganic anticorrosion pigment was synthesized by adsorbing zinc ions onto polyaniline doped with phytic acid (PANI-PA@Zn) by ionic bond. PANI-PA@Zn demonstrates excellent thermal stability and dispersibility in waterborne epoxy coatings. The waterborne epoxy coating exhibited a remarkable anticorrosion performance with a low addition of PANI-PA@Zn. Incorporation of 6 wt% of PANI-PA@Zn, waterborne epoxy coating presented excellent anticorrosion and mechanical properties. After an 84-day immersion, the coating resistance was still maintained at 10¹¹ Ω cm². Furthermore, scanning Kelvin probe (SKP) analysis also confirmed its effective self-healing capability. The superior corrosion inhibition effect of PANI-PA@Zn came from the passivation of polyaniline and the chelating of zinc phytate groups in PANI. These findings suggested that PANI-PA@Zn was a promising high-performance anticorrosive pigment capable of providing waterborne epoxy coatings with exceptional long-term corrosion protection for industrial applications.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 18","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147668613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Elucidation of Liquid-Wall-Slip Effect in Rotary Jet Spinning and the Formation Mechanism of Composite Fibers","authors":"Meng Zhang,&nbsp;Shuo Zhao,&nbsp;Zhiming Zhang,&nbsp;Qiaoling Ji,&nbsp;Zhen Chen,&nbsp;Qiao Xu","doi":"10.1002/app.70586","DOIUrl":"10.1002/app.70586","url":null,"abstract":"<div>\u0000 \u0000 <p>As an innovative method for composite fiber fabrication, Rotary Jet Spinning (RJS) technology exhibits significant advantages over conventional electrospinning and melt spinning techniques in terms of equipment simplicity, material versatility, energy efficiency, and production throughput. Consequently, it has attracted considerable attention in the field of fiber material science in recent years. While existing studies predominantly focus on optimizing process parameters for controlling fiber morphology and exploring applications, systematic investigations into the rheological behavior of polymer solutions within fluid reservoir systems remain limited. This study utilizes a core-shell structured RJS apparatus to conduct mechanical analysis of polymer solution dynamics, with particular emphasis on elucidating the kinematic principles governing dual-spinning solutions in the reservoir. Finite element analysis (FEA) is employed to examine fluid flow patterns in both the reservoir and nozzle during RJS operation, complemented by experimental fabrication of composite fibers using the core-shell spinning system. This research establishes a comprehensive framework that integrates theoretical modeling, computational fluid dynamics (CFD) simulations, and empirical validation. The comparative analysis confirms the validity of the proposed theoretical model, providing valuable insights for optimizing high-performance composite fiber production.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 18","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147668775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study of Basal-Spacing and Characteristics of X-Rays Diffraction-Peaks of Natural Bentonite-Poly(Ethylene Glycol) Composites Versus the Polymer Molecular Weight: Experiment and Exact Theory","authors":"A. Seidi,&nbsp;M. Benhamou,&nbsp;D. Khalil,&nbsp;M. Naciri Bennani,&nbsp;M. Aalaoul","doi":"10.1002/app.70591","DOIUrl":"10.1002/app.70591","url":null,"abstract":"&lt;div&gt;\u0000 \u0000 &lt;p&gt;This study investigates the intercalation of poly(ethylene glycol) (PEG) into a natural Moroccan bentonite. The latter being collected from an industrial area near Nador-City of Northeast of Morocco. First, we present a powerful theoretical approach based on &lt;i&gt;geometric scaling theory&lt;/i&gt; to derive exact scaling relations for key structural parameters. The derived relationship obtained between the basal spacing, &lt;span&gt;&lt;/span&gt;&lt;math&gt;\u0000 \u0000 &lt;semantics&gt;\u0000 \u0000 &lt;mrow&gt;\u0000 \u0000 &lt;mi&gt;d&lt;/mi&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;/semantics&gt;\u0000 &lt;/math&gt;, and the polymer molecular weight, &lt;span&gt;&lt;/span&gt;&lt;math&gt;\u0000 \u0000 &lt;semantics&gt;\u0000 \u0000 &lt;mrow&gt;\u0000 \u0000 &lt;mi&gt;M&lt;/mi&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;/semantics&gt;\u0000 &lt;/math&gt;, leads to an exact scaling relations for the physical quantities of interest, expressed as &lt;span&gt;&lt;/span&gt;&lt;math&gt;\u0000 \u0000 &lt;semantics&gt;\u0000 \u0000 &lt;mrow&gt;\u0000 \u0000 &lt;mi&gt;d&lt;/mi&gt;\u0000 \u0000 &lt;mo&gt;=&lt;/mo&gt;\u0000 \u0000 &lt;msub&gt;\u0000 \u0000 &lt;mi&gt;d&lt;/mi&gt;\u0000 \u0000 &lt;mn&gt;0&lt;/mn&gt;\u0000 &lt;/msub&gt;\u0000 \u0000 &lt;mo&gt;+&lt;/mo&gt;\u0000 \u0000 &lt;mi&gt;B&lt;/mi&gt;\u0000 \u0000 &lt;mo&gt;×&lt;/mo&gt;\u0000 \u0000 &lt;msup&gt;\u0000 \u0000 &lt;mi&gt;M&lt;/mi&gt;\u0000 \u0000 &lt;mrow&gt;\u0000 \u0000 &lt;mn&gt;1&lt;/mn&gt;\u0000 \u0000 &lt;mo&gt;−&lt;/mo&gt;\u0000 \u0000 &lt;mi&gt;α&lt;/mi&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;/msup&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;/semantics&gt;\u0000 &lt;/math&gt; where &lt;span&gt;&lt;/span&gt;&lt;math&gt;\u0000 \u0000 &lt;semantics&gt;\u0000 \u0000 &lt;mrow&gt;\u0000 \u0000 &lt;mi&gt;α&lt;/mi&gt;\u0000 \u0000 &lt;mo&gt;=&lt;/mo&gt;\u0000 \u0000 &lt;mn&gt;2&lt;/mn&gt;\u0000 \u0000 &lt;mo&gt;/&lt;/mo&gt;\u0000 \u0000 &lt;mn&gt;3&lt;/mn&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;/semantics&gt;\u0000 &lt;/math&gt;. Afterwards, we have conducted an experimental validation using X-ray diffraction (XRD) on bentonite-PEG composites synthesized via &lt;i&gt;solvent-assisted intercalation&lt;/i&gt;, with PEG molecular weights ranging from &lt;span&gt;&lt;/span&gt;&lt;math&gt;\u0000 \u0000 &lt;semantics&gt;\u0000 \u0000 &lt;mrow&gt;\u0000 \u0000 &lt;mn&gt;200&lt;/mn&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;/semantics&gt;\u0000 &lt;/math&gt; to &lt;span&gt;&lt;/span&gt;&lt;math&gt;\u0000 \u0000 &lt;semantics&gt;\u0000 \u0000 &lt;mrow&gt;\u0000 \u0000 &lt;mn&gt;8000&lt;/mn&gt;\u0000 \u0000 ","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 18","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147668778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Lignin@Polypyrrole Nanoparticles Enhanced Hydrogel for Recyclable Congo Red Dye Adsorption","authors":"Lijun Qian,&nbsp;Quanling Zhao,&nbsp;Yue Lin,&nbsp;Jisheng Yang,&nbsp;Zhiyong Qin","doi":"10.1002/app.70580","DOIUrl":"10.1002/app.70580","url":null,"abstract":"<div>\u0000 \u0000 <p>Polypyrrole (PPy) has been widely studied for its considerable potential in adsorption applications. However, its poor dispersibility significantly limits its effectiveness. In this work, lignin nanoparticles (LNPs) were prepared by green deep eutectic solvent, and the lignin@polypyrrole nanoparticle (NLP) was constructed via the in situ polymerization of pyrrole on the surface of the LNPs, effectively addressing the problem of uneven dispersion of PPy and improving its adsorption capacity. Furthermore, polyvinyl alcohol (PVA)/gelatin hydrogels enhanced by NLP were constructed for synergistic cyclic adsorption. The tensile strength of the composite hydrogel increased by 20% to 1.21 MPa, and its adsorption capacity for Congo red reached 202.7 mg/g. The adsorption kinetics of the composite hydrogel fit the pseudo-first-order adsorption model, indicating that the adsorption mechanism is primarily governed by physical adsorption. With five adsorption–desorption cycles completed, the composite hydrogel exhibited a slight decline in adsorption capacity of only 8.3% compared to the initial cycle, while maintaining good structural integrity. Overall, this composite hydrogel exhibits significant potential and excellent cyclic adsorption performance for dye wastewater treatment.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 18","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147667951","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Metal-Free Polymeric Boron Catalyst: Clustering Effect Enables Highly Efficient CO2 Conversion to Polycarbonates","authors":"Qimin Lu,&nbsp;Tingting Zhao,&nbsp;Shuanjin Wang,&nbsp;Dongmei Han,&nbsp;Sheng Huang,&nbsp;Min Xiao,&nbsp;Yuezhong Meng","doi":"10.1002/app.70592","DOIUrl":"10.1002/app.70592","url":null,"abstract":"<div>\u0000 \u0000 <p>Borane element as Lewis acids plays an indispensable role for epoxide/CO₂ copolymerization among metal-free catalysts. Hence, we precisely designed a polymeric boron catalyst (PBBN) by anchoring multiple borane active centers onto the polyethylene chain via one-step hydroboration reaction. PBBN shows better air and moisture tolerance compared to common borane-based small-molecule catalysts, thereby ensuring favorable safety profiles. Furthermore, it exhibits excellent catalytic activity in both the homopolymerization of PO and the copolymerization of CHO/CO₂ owing to the “clustering effect” arising from the aggregation of boron centers. Remarkably, PBBN demonstrated exceptional proton tolerance in poly(cyclohexene carbonate) diol (PCHCDL) synthesis with each boron atom capable of withstanding at least 50 equivalents of 1,4-butanediol (BDO, equivalent to 100 proton equivalents), showing promising application potential in the polycarbonate diol synthesis.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 18","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147668419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"PVP-Coated Fe3O4/Fe2O3 Nanocomposites for Efficient Photocatalytic Degradation of Organic and Inorganic Pollutants","authors":"Mohammed Laid Tedjani,&nbsp;Iman Kir,&nbsp;Salah Eddine Laouini,&nbsp;Abderrhmane Bouafia,&nbsp;Souhaila Meneceur,&nbsp;Abdelmadjid Guerram,&nbsp;Bilal Khaled,&nbsp;Mahmood M. S. Abdullah,&nbsp;Tomasz Trzepieciński","doi":"10.1002/app.70560","DOIUrl":"https://doi.org/10.1002/app.70560","url":null,"abstract":"<div>\u0000 \u0000 <p>In this study, Fe₃O₄/Fe₂O₃ and polyvinylpyrrolidone (PVP)-capped Fe₃O₄/Fe₂O₃@PVP nanocomposites were synthesized via a controlled hydrothermal route and evaluated as multifunctional photocatalysts for the degradation of inorganic and organic pollutants. Structural analyses confirmed the coexistence of magnetite and hematite phases, with PVP incorporation inducing compressive lattice strain, reducing crystallite size from 19.91 to 14.83 nm, and increasing the specific surface area from 55.84 to 68.8 m² g⁻¹. UV–Vis spectroscopy revealed a slight red shift in the optical bandgap (from 1.25 to 1.04 eV), attributed to enhanced polymer–oxide electronic coupling. Morphological studies showed that PVP effectively minimized nanoparticle agglomeration, leading to improved dispersion and surface accessibility. Photocatalytic evaluations under UV irradiation demonstrated nearly complete degradation (~99.9%) of Cr(III) within 105 min and of the organic pollutants 2,4-dinitroaniline and p-bromohydroxybenzene within 120 min. The PVP-capped Fe₃O₄/Fe₂O₃@PVP nanocomposite exhibited slightly superior efficiency and stability compared to the uncoated sample, owing to enhanced charge carrier separation, reduced electron–hole recombination, and improved interfacial contact with the pollutants. These findings highlight the potential of Fe₃O₄/Fe₂O₃@PVP nanocomposites as efficient, recyclable, and sustainable photocatalysts for water purification and environmental remediation.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 17","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147565059","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Temperature- and pH-Responsive Near-Infrared-Activated Hydrogel With Synergistic Antibacterial Activity","authors":"Zhiyuan Huang,&nbsp;Chengzong Ji,&nbsp;Xueli Zang","doi":"10.1002/app.70561","DOIUrl":"https://doi.org/10.1002/app.70561","url":null,"abstract":"<div>\u0000 \u0000 <p>The escalating threat of multidrug-resistant bacteria highlights the urgent need for innovative nonantibiotic strategies. Herein, we report a multifunctional smart hydrogel, P(NIPAM-co-MAA/OHA)@PDA, engineered for synergistic wound therapy. It was fabricated via one-pot free-radical copolymerization of <i>N</i>-isopropylacrylamide (NIPAM) and methacrylic acid (MAA), with simultaneous incorporation of oxidized hyaluronic acid (OHA) and polydopamine nanoparticles (PDA). The designed hydrogel exhibits dual temperature and pH responsiveness: the PNIPAM network enables thermally triggered bacterial sequestration under physiological temperature conditions (near body temperature), while the MAA component enhances interfacial interactions with bacterial surfaces in the acidic microenvironment of infected wounds. Notably, the as-prepared hydrogel demonstrates excellent mechanical properties, including a tensile elongation up to 10 times its original length, superior self-healing capability, and strong tissue adhesion performance. Upon near-infrared (NIR) irradiation, the embedded PDA nanoparticles efficiently generate localized hyperthermia, which achieves direct and effective ablation of the sequestration pathogens. This unique integration of responsive bacterial sequestration and NIR-triggered thermal ablation confers a potent synergistic antibacterial effect, with eradication rates exceeding 80% against both \u0000 <i>Escherichia coli</i>\u0000 and \u0000 <i>Staphylococcus aureus</i>\u0000 . Furthermore, the hydrogel shows excellent biocompatibility and can promote fibroblast proliferation in vitro, highlighting its great potential for clinical wound healing applications.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 17","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147569149","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}